EP3859398A1

EP3859398A1 - Satellite differential auxiliary data transmission method, location method and apparatus

Info

Publication number: EP3859398A1
Application number: EP19858920.2A
Authority: EP
Inventors: Dajun Zhang; Haiyang Quan
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2018-09-14
Filing date: 2019-06-21
Publication date: 2021-08-04
Also published as: KR102651954B1; US20220057524A1; KR20210048556A; CN110907968A; WO2020052313A1; EP3859398A4; US11480688B2

Abstract

The present invention provides a satellite differential auxiliary data transmission method, a location method and an apparatus, for ensuring that a better high-precision Beidou satellite location service can be provided on the basis of 5G or other developable technology networks. The satellite differential auxiliary data transmission method comprises: an LMF acquiring auxiliary information related to a Beidou satellite location system, and calculating auxiliary information for an UE location calculation, the auxiliary information including differential auxiliary data (S101); and sending, via broadcast, to a base station the auxiliary information for the UE location calculation (S102).

Description

The present application claims the priority from Chinese Patent Application No. 201811075546.8 , filed with the Chinese Patent Office on September 14, 2018 and entitled "Satellite Differential Assistance data Transmission Method, Positioning method and Apparatus", which is hereby incorporated by reference in its entirety.

Field

The present application relates to the field of communication technology, and in particular to a satellite differential assistance data transmission method, a positioning method and an apparatus.

Background

The Location Based Service (LBS) is a service of obtaining the terminal location information through a wireless communication network or other positioning systems and then providing users with various location-related information in combination with a geographic information system. At present, the outdoor positioning technology (Beidou satellite positioning technology) based on the Global Navigation Satellite System (GNSS) has been widely used in various fields, including current mobile terminals, but there is a problem that the accuracy is obviously not high enough.

Summary

The embodiments of the present application provide a satellite differential assistance data transmission method, a positioning method and an apparatus, so as to ensure that better Beidou satellite positioning service with high precision can be provided on the basis of 5G or other developable technical networks.
At the Location Management Function (LMF) entity side, an embodiment of the present application provides a satellite differential assistance data transmission method, including:

acquiring and calculating assistance information related to a Beidou satellite positioning system, where the assistance information includes differential assistance data;
sending the assistance information related to the Beidou satellite positioning system to a base station through broadcasting.

With this method, the base station can broadcast the assistance information related to the Beidou satellite positioning system including the differential assistance data to the UE, so as to ensure that the Beidou satellite positioning service with high precision can be better provided on the basis of 5G or other developable technical networks.
The differential assistance data is composed of observation data or correction data of the measurement station, providing the moving station with the double-difference reference station data or directly with the correction data, to eliminate the errors related to the distance of the measurement station.
Here, the differential assistance data includes but not limited to: reference time, reference position, ionospheric model, Real-Time Kinematic (RTK) related parameters.
Optionally, the assistance information for User Equipment (UE) location calculation further includes an Identity of Global Navigation Satellite System (GNSS ID) and an Identity of Space Based Augmentation System (SBAS ID).
Here, the SBAS system monitors the navigation satellites by a large number of widely distributed differential stations (with known positions), obtains the original positioning data (pseudorange, observed value of carrier phase, etc.), and sends it to the central processing facility (primary control station). The latter obtains various positioning correction information of each satellite through calculation, sends it to the Geostationary Earth Orbit (GEO) satellite through an upload station, and finally broadcasts the correction information to the majority of users, so as to achieve the purpose of improving the positioning accuracy.
Optionally, the assistance information for UE location calculation further includes an indication to confirm whether the differential assistance data is encrypted.
The indication of whether the differential assistance data is encrypted is set by the network side, wherein the decryption indication is carried by the LMF entity, and the UE decrypts the data according to the key with corresponding level.
Optionally, the LMF entity receives the assistance information sent by the base station for assisting in determining the differential assistance data for UE location calculation; and the differential assistance data is determined according to the assistance information for assisting in determining the differential assistance data for UE location calculation;
wherein the differential assistance data for UE location calculation refers to differential assistance data of a serving base station, or a serving cell, or a Transmission Point (TP) of a serving base station of a UE.
Optionally, the assistance information for assisting in determining the differential assistance data for UE location calculation includes:
geographic location information of the base station, or geographic location information of a cell of the base station, or geographic location information of the TP of the base station.
In the embodiment of the present application, the interaction of the assistance information between the LMF entity and the base station is required to calculate the Beidou-related assistance data, where the LMF entity calculates the differential numeric value of the base station according to the precise position information of the base station in combination with the differential data of adjacent satellite reference stations, and then transmits this numeric value to the UE as the positioning compensation value of the UE.
Optionally, the method further includes: acquiring the assistance information sent by a space based augmentation system for calculating the differential assistance data for UE location calculation, where the assistance information contains differential assistance data of the space based augmentation system.
Here, the space based augmentation system is, for example, the Beidou satellite reference station.
Optionally, the satellite differential assistance data transmission method provided by the embodiment of the present application further includes:
updating, by the LMF entity, the differential assistance data periodically, and sending the updated differential assistance data to the base station.
At the base station side, an embodiment of the present application provides a satellite differential assistance data transmission method, which includes:

receiving assistance information for UE location calculation, wherein the assistance information includes differential assistance data;
broadcasting or updating a positioning system message according to the assistance information, wherein the positioning system message carries the differential assistance data.

With this method, after receiving the assistance information sent from the LMF entity, the base station will trigger the broadcast or update of the positioning system message according to the broadcast cycle from the LMF or the indication on whether to enable the broadcast.
Optionally, the assistance information further includes a GNSS ID and an SBAS ID.
Optionally, the assistance information further includes an indication to confirm whether the differential assistance data is encrypted.
Optionally, the satellite differential assistance data transmission method provided by the embodiment of the present application further includes:
the base station sends the assistance information for assisting in determining the differential assistance data for UE location calculation to the LMF entity.
Optionally, the assistance information for assisting in determining the differential assistance data for UE location calculation includes:
geographic location information of a base station, or geographic location information of a cell of a base station, or geographic location information of a TP of a base station.
Optionally, the satellite differential assistance data transmission method provided by the embodiment of the present application further includes:

receiving differential assistance data updated periodically;
sending the updated differential assistance data to a UE.

At the UE side, an embodiment of the present application provides a positioning method, which includes:

receiving a positioning system message, wherein the positioning system message includes assistance information for UE location calculation, and the assistance information includes differential assistance data;
determining the location information of a UE according to the positioning system message.

With this method, the UE performs the differential calculation of precise position information according to the acquired Beidou satellite signal in combination with the differential numeric value acquired in the broadcast.
Optionally, the assistance information further includes a GNSS ID and an SBAS ID.
Optionally, the positioning method provided by the embodiment of the present application further includes:

receiving assistance information for UE location calculation updated periodically;
correcting the location information of the UE according to the updated assistance information for UE location calculation.

At the LMF entity side, an embodiment of the present application provides a satellite differential assistance data transmission apparatus, which includes:

a determining unit configured to acquire the assistance information related to a Beidou satellite positioning system, and calculate the assistance information for UE location calculation, wherein the assistance information includes differential assistance data;
a sending unit configured to send the assistance information related to the Beidou satellite positioning system to a base station through broadcasting.

Correspondingly, at the base station side, an embodiment of the present application provides a satellite differential assistance data transmission apparatus, which includes:

a receiving unit configured to receive the assistance information for UE location calculation, wherein the assistance information includes differential assistance data;
an updating unit configured to broadcast or update a positioning system message according to the assistance information, wherein the positioning system message carries the differential assistance data.

At the UE side, an embodiment of the present application provides a positioning apparatus, which includes:

a receiving unit configured to receive a positioning system message, wherein the positioning system message includes assistance information for UE location calculation, and the assistance information includes differential assistance data;
a determining unit configured to determine the location information of a UE according to the positioning system message.

Another embodiment of the present application provides a computing device, which includes a memory and a processor, wherein the memory is configured to store the program instructions, and the processor is configured to invoke the program instructions stored in the memory and perform any one of the above-mentioned methods in accordance with the obtained program.
Another embodiment of the present application provides a computer storage medium storing the computer executable instructions which are configured to cause the computer to perform any one of the above-mentioned methods.

Brief Description of the Drawings

In order to illustrate the technical solutions in the embodiments of the present application more clearly, the accompanying figures which need to be used in describing the embodiments will be introduced below briefly. Obviously the accompanying figures described below are only some embodiments of the present application, and other accompanying figures can also be obtained by those ordinary skilled in the art according to these accompanying figures without creative labor.

FIG. 1 is a schematic diagram of a 5G mobile communication system in the prior art;
FIG. 2 is a schematic diagram of a 5G wireless protocol architecture in the prior art;
FIG. 3 is a schematic diagram of a 5G positioning network architecture in the prior art;
FIG. 4 is a schematic flowchart of a Beidou assistance data transmission method provided by embodiments of the present application;
FIG. 5 is a schematic flowchart of a Beidou assistance data update method provided by embodiments of the present application;
FIG. 6 is a schematic flowchart of a system broadcast method of Beidou assistance data provided by embodiments of the present application;
FIG. 7 is a schematic diagram of an assistance information interaction process between a base station and an LMF provided by embodiments of the present application;
FIG. 8 is a schematic flowchart of a satellite differential assistance data transmission method provided at the LMF side according to embodiments of the present application;
FIG. 9 is a schematic flowchart of a satellite differential assistance data transmission method provided at the base station side according to embodiments of the present application;
FIG. 10 is a schematic flowchart of a positioning method provided at the UE side according to embodiments of the present application;
FIG. 11 is a structural schematic diagram of a satellite differential assistance data transmission apparatus provided at the LMF side according to embodiments of the present application;
FIG. 12 is a structural schematic diagram of a satellite differential assistance data transmission apparatus provided at the base station side according to embodiments of the present application;
FIG. 13 is a structural schematic diagram of a positioning apparatus provided at the UE side according to embodiments of the present application;
FIG. 14 is a structural schematic diagram of a satellite differential assistance data transmission apparatus provided by embodiments of the present application;
FIG. 15 is a structural schematic diagram of a positioning apparatus provided at the user equipment side according to embodiments of the present application.

Detailed Description of the Embodiments

The present application discloses a satellite differential assistance data transmission method, a positioning method and apparatus, so as to ensure that the Beidou satellite positioning service with high precision can be better provided on the basis of 5G or other developable technical networks.
FIG. 1 is a schematic diagram of a 5G mobile communication system in the prior art. In the 5G system, most nodes at the network side are connected by wire. As illustrated in FIG. 1, the gNBs are connected through wired links, and the gNB (NR NodeB) and core network node, e.g., Access and Mobility Management Function (AMF), User Plane Function (UPF), etc., are also connected by wired link.
Here, the ng-eNB refers to a node providing E-UTRA user plane and control plane protocol terminations towards the UE, and connected via the NG interface to the 5GC.
FIG. 2 is a schematic diagram of the 5G wireless protocol architecture in the prior art. The 5G basic user plane protocol layer includes Shared Device Access Protocol (SDAP), Packet Data Convergence Protocol (PDCP), Radio Link Control (RLC) and Media Access Control (MAC), Port Physical Layer (PHY). The control plane protocol layer includes Non-Access Stratum (NAS), Radio Resource Control (RRC), PDCP, RLC, MAC and PHY. The protocol stack architecture of the user plane and the control plane specifically refers to FIG. 2.
FIG. 3 is a schematic diagram of a 5G positioning network architecture in the prior art. This is a service-based location service network architecture, wherein the Location Management Function (LMF) has the following functions: support location calculation, obtain a downlink location measurement result or location estimation from the UE, obtain an uplink location measurement result from the Radio Access Network (RAN) side, obtain the assistance data from the RAN side, and so on.
The technical solutions provided by the embodiments of the present application may be applicable to various systems, especially 5G systems. For example, the applicable systems may be: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS) system, Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD) system, Universal Mobile Telecommunication System (UMTS), Worldwide interoperability for Microwave Access (WiMAX) system, 5G system and 5G NR system, etc. These systems all include terminal devices and network devices.
The terminal device involved in the embodiments of the present application may be a device that only provides the voice and/or data connectivity to the user, a handheld device with the wireless connection function, or other processing device connected to the wireless modem. In different systems, the terminal device may have different names. For example, in a 5G system, the terminal device may be referred to as User Equipment (UE). The wireless terminal device can communicate with one or more core networks via the RAN, and the wireless terminal device can be a mobile terminal, such as a mobile telephone (or called "cellular" telephone), and a computer with the mobile terminal, for example, can be a portable, pocket, handheld, computer built-in or vehicle-carried mobile device, and they exchange the voice and/or data with the radio access network. For example, Personal Communication Service (PCS) telephone, cordless telephone, Session Initiation Protocol (SIP) telephone, Wireless Local Loop (WLL) station, Personal Digital Assistant (PDA) and other devices. The wireless terminal device can also be called system, subscriber unit, subscriber station, mobile station, mobile, remote station, access point, remote terminal, access terminal, user terminal, user agent, user device, which is not limited in the embodiments of the present application.
The network device involved in the embodiments of the present application may be a base station, which may include a plurality of cells. Depending on specific application scenarios, the base station may also be called access point, or may refer to the device in the access network communicating with the wireless terminal via one or more sectors over the air interface or other names. The network device may be used to perform the inter-conversion between the received air frame and Internet Protocol (IP) packet, and used as the router between the wireless terminal device and the rest of the access network, wherein the rest of the access network may include IP networks. The network device can further coordinate the attribute management of the air interface. For example, the network device involved in the embodiments of the present application can be a network device (Base Transceiver Station (BTS)) in the Global System of Mobile communication (GSM) or Code Division Multiple Access (CDMA), or can be a network device (NodeB) in the Wideband Code Division Multiple Access (WCDMA), or can be an evolutional network device (evolutional Node B (eNB or e-NodeB)) in the Long Term Evolution (LTE) system, a 5G base station in the 5G network architecture (next generation system), or can be a Home evolved Node B (HeNB), a relay node, femto, pico, etc., which is not limited in the embodiments of the present application.
The embodiments of the present application will be described below in detail with reference to the drawings of the specification. It should be noted that the showing order of the embodiments of the present application only represents the sequential order of the embodiments, but does not represent the pros and cons of the technical solutions provided by the embodiments, and the described embodiments are only a part of the embodiments of the present application but not all the embodiments. Based upon the embodiments of the present application, all of other embodiments obtained by those ordinary skilled in the art without creative work pertain to the protection scope of the present application.
In the embodiments of the present application, the LMF provides the Beidou-related assistance information to a 5G base station, where the information includes differential assistance data, GNSS ID, SBAS ID and other information. In addition, the LMF can set whether the assistance information needs to be encrypted, that is, the LMF carries a decryption instruction at the same time. The UE decrypts the data with the key of corresponding level according to the decryption instruction; and the LMF decides to update the Beidou-related differential assistance data to the corresponding 5G base station at regular intervals.
When the 5G base station receives the assistance information sent by the LMF through broadcasting, the 5G base station triggers the broadcast or update of the positioning system message according to the broadcast cycle from the LMF or the indication on whether to enable the broadcast, and returns a feedback message of assistance data update configuration, where the feedback message can carry the information indicating the configuration is failed or successful. The 5G base station will broadcast or update the Beidou-related assistance data in a designated or pre-configured cell according to the latest configuration information.
In order to perform the Beidou location with high precision, the UE obtains the required Beidou-related assistance data based on the received positioning-related broadcast information, and then performs the corresponding positioning measurements according to the GNSS ID and SBAS ID in the broadcast information. For example, UE receives a new Beidou signal, and calculates the accurate location information in combination with the Beidou-related assistance data.
Here, the Beidou-related assistance information is confirmed through the LPPa protocol interaction between the 5G base station and LMF. For example, the 5G base station provides its own precise location, the precise location of the cell belonging to the 5G base station, or the precise location information of the TP of the 5G base station to the LMF; or feeds back its own precise location, the precise location of the cell under its jurisdiction, or the precise geographic location of the transmission point of the 5G base station according to the assistance information request message initiated by the LMF.
First embodiment: a Beidou assistance data (differential data) transmission process, referring to FIG. 4 for details, includes the following operations.
Operation 401: the LMF decides to provide the Beidou-related differential assistance data to the 5G base station (NR gNB). Specifically, the generated differential assistance data constitutes a System Information Block (SIB) in the form of NR PPa, and then generates a corresponding NR PPa message together with the broadcast cycle, whether to encrypt and other information, where the message also needs to carry the GNSS ID (such as: identity of Beidou satellite navigation system BDS) and SBAS ID information that belongs to the Beidou-related differential assistance data. The assistance data configuration message from the LMF may include an indication to start or stop the broadcast.
Operation 402: the 5G base station (NR gNB) will return a feedback message of assistance data initial configuration, which may carry the information indicating the configuration is failed or successful.
The 5G base station (NR gNB) will decide to broadcast or stop broadcasting the Beidou-related differential assistance data in a designated or pre-configured cell according to the configuration information.
Second embodiment: a Beidou assistance data (differential data) update process, referring to FIG. 5 for details, includes the following operations.
Operation 501: the LMF decides to update the Beidou-related differential assistance data towards the corresponding 5G base station (NR gNB) at regular intervals. Specifically, the updated differential assistance data constitutes an SIB (System Information Block) in the form of NR PPa, and then the updated broadcast cycle or encryption indication information may be added to generate a corresponding NR PPa message, where the message also needs to carry the GNSS ID (such as: BDS) and SBAS ID information that belongs to the Beidou-related differential assistance data.
Here, there is a need to transfer between the LMF entity side and the RAN side through the AMF protocol, and the direct transmission cannot be performed between the LMF and the RAN.
Operation 502: the 5G base station (NR gNB) will update the stored configuration according to the GNSS ID and SBAS ID, and then return a feedback message of assistance data update configuration, which can carry the information indicating the configuration is failed or successful.
The 5G base station (NR gNB) will decide to update the broadcast Beidou-related differential assistance data in a designated or pre-configured cell according to the latest configuration information.
Third embodiment: a system broadcasting process of Beidou assistance data (differential data), referring to FIG. 6, specifically includes the following operations.
Operation 601: in order to perform the Beidou positioning with high precision, the UE obtains the required Beidou-related assistance data based on the received positioning-related broadcast information.
Operation 602: the UE performs the corresponding positioning measurement according to the GNSS ID (such as: BDS) and SBAS ID, for example, receives a new Beidou signal, and calculates the initial position information in combination with the Beidou-related assistance data.
Here, the UE performs the differential calculation for precise position information according to the acquired Beidou satellite signal in combination with the differential data acquired in the broadcast.
Operation 603: the UE obtains the updated Beidou-related assistance data.
Operation 604: the UE corrects the UE position estimation according to the updated Beidou assistance data, that is, corrects the UE position according to the periodically-updated differential data.
The UE iterates the operations 603 to 604 repeatedly until it obtains the UE position estimation with sufficient precision (the update period is Is, which can reach the positioning precision of decimeter level), where the number of iterations specifically depends on the algorithm implementation.
Fourth embodiment: an assistance information interaction process between the base station and the LMF, referring to FIG. 6, includes the following operations.
Operation 701: in order to calculate the Beidou differential data, the LMF needs to know the precise location information used to locate the 5G base station and sends an assistance information request message which may contain the specified cell information.
The cell information is, for example, the cell ID and Real Time Transport Protocol (TRP) ID.
After the LMF sends the assistance information request message, the target cell will return its precise geographic location, and then the LMF calculates the differential data of the base station according to the precise position information of the base station in combination with the differential data of adjacent satellite reference stations.
Operation 702: the 5G base station (NR gNB) feeds back an assistance information report message to the LMF, where the message contains at least the precise location information of the cell under its jurisdiction (or cell designated by the LMF) or the TP.
Operation 703: optionally, the 5G base station (NR gNB) is allowed to carry the assistance information to the LMF independently through other NR PPa uplink message (sent by the NG-RAN to the LMF), where the message contains at least the precise position information of the cell of the base station (or cell designated by the LMF) or the TP of the base station.
Here, the LMF calculates the differential numeric value of the base station according to the precise position information of the base station in combination with the differential data of adjacent satellite reference stations, and then transmits this numeric value to the UE as the positioning compensation value of the UE.
Here, the method and apparatus are based on the same application concept. Since the principle of solving the problem in the method is similar to that in the apparatus, the implementations of the apparatus and method can refer to each other, and the repeated description thereof will be omitted.
In view of the above, at the LMF entity side, embodiments of the present application provide a satellite differential assistance data transmission method, referring to FIG. 8, including the following.
S101: acquiring the assistance information related to a Beidou satellite positioning system, and calculating the assistance information for UE location calculation, where the assistance information includes differential assistance data.
S102: sending the assistance information for UE location calculation to a 5G base station through broadcasting.
Optionally, the assistance information for UE location calculation further includes an Identity of Global Navigation Satellite System (GNSS ID) and an Identity of Space Based Augmentation System (SBAS ID).
Optionally, the assistance information for UE location calculation further includes an indication to confirm whether the differential assistance data is encrypted.
Optionally, the satellite differential assistance data transmission method further includes:

receiving the assistance information sent by the base station for assisting in determining the differential assistance data for UE location calculation;
the differential assistance data for UE location calculation is determined according to the assistance information for assisting in determining the differential assistance data for UE location calculation;
wherein the differential assistance data for UE location calculation refers to differential assistance data of a serving base station, or a serving cell, or a TP of a serving base station of a UE.

Optionally, the assistance information for assisting in determining the differential assistance data for UE location calculation includes:
the geographic location information of the base station, or the geographic location information of a cell of the base station, or the geographic location information of the TP of the base station.
Optionally, the method further includes: acquiring the assistance information sent by a space based augmentation system for calculating the differential assistance data for UE location calculation, where the assistance information contains but not limited to differential assistance data of the space based augmentation system.
Optionally, the satellite differential assistance data transmission method further includes:
updating the differential assistance data periodically, and sending the updated differential assistance data to the base station.
Correspondingly, at the base station side, embodiments of the present application provide a satellite differential assistance data transmission method, referring to FIG. 9, including the following.
S201: receiving the assistance information for UE location calculation, where the assistance information includes differential assistance data.
S202: broadcasting or updating a positioning system message according to the assistance information, where the positioning system message carries the differential assistance data.
Optionally, the assistance information further includes a GNSS ID and an SBAS ID.
Optionally, the assistance information further includes an indication to confirm whether the differential assistance data is encrypted.
Optionally, the satellite differential assistance data processing method further includes:
sending the assistance information for assisting in determining the differential assistance data for UE location calculation to an LMF.
Optionally, the assistance information for assisting in determining the differential assistance data for UE location calculation includes:
the geographic location information of a base station, or the geographic location information of a cell of a base station, or the geographic location information of a TP of a base station.
Optionally, the satellite differential assistance data processing method further includes:

receiving the differential assistance data updated periodically;
sending the updated differential assistance data to a UE.

At the UE side, an embodiment of the present application provides a positioning method, referring to FIG. 10, including the following.
S301: receiving a positioning system message, where the positioning system message includes assistance information for UE location calculation, where the assistance information includes differential assistance data.
S302: determining the location information of a UE according to the positioning system message.
Optionally, the assistance information further includes a GNSS ID and an SBAS ID.
Optionally, the satellite differential assistance data processing method further includes:

receiving the assistance information for UE location calculation updated periodically;
correcting the location information of the UE according to the updated assistance information for UE location calculation.

At the LMF entity side, embodiments of the present application provide a satellite differential assistance data transmission apparatus, referring to FIG. 11, including:

a determining unit 11 configured to acquire and calculate the assistance information related to a Beidou satellite positioning system, where the assistance information includes but not limited to differential assistance data;
a sending unit 12 configured to send the assistance information related to the Beidou satellite positioning system to a 5G base station through broadcasting.

Correspondingly, at the base station side, an embodiment of the present application provides a satellite differential assistance data transmission apparatus, referring to FIG. 12, including:

a receiving unit 21 configured to receive the assistance information for UE location calculation, where the assistance information includes but not limited to differential assistance data;
an updating unit 22 configured to broadcast or update a positioning system message according to the assistance information, where the positioning system message carries the differential assistance data.

At the UE side, an embodiment of the present application provides a positioning apparatus, referring to FIG. 13, including:

a receiving unit 31 configured to receive a positioning system message, where the positioning system message includes assistance information for UE location calculation, and the assistance information includes but not limited to differential assistance data;
a determining unit 32 configured to determine the location information of a UE according to the positioning system message.

It should be noted that the division of units in the embodiments of the present application is illustrative, and is merely a kind of logical function division, and there may be other division methods in actual implementations. In addition, the functional units in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware, or can be implemented in the form of software functional units.
When the integrated unit is implemented in the form of software functional unit and sold or used as an independent product, it may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application essentially or a part that contributes to the prior art or all or a part of the technical solution may be embodied in the form of software product. The computer software product is stored in a storage medium, and includes several instructions used to enable a computer device (which may be a personal computer, server, or network device, etc.) or a processor to perform all or some of the operations of the methods of various embodiments of the present application. The above-mentioned storage medium includes: USB flash drive, mobile hard disk, Read-Only Memory (ROM), Random Access Memory (RAM), magnetic disk or compact disc or various media that can store the program codes.
An embodiment of the present application provides a computing device, which can specifically be a desktop computer, a portable computer, a smart phone, a tablet computer, a Personal Digital Assistant (PDA) or the like. The computing device can include a Center Processing Unit (CPU), a memory, input/output devices and the like. The input device can include a keyboard, a mouse, a touch screen and the like, and the output device can include a display device such as Liquid Crystal Display (LCD), Cathode Ray Tube (CRT) or the like.
The memory can include a Read-Only Memory (ROM) and a Random Access Memory (RAM), and provide the program instructions and data stored in the memory to the processor. In an embodiment of the present application, the memory may be used to store the program of any one of the methods provided by the embodiments of the present application.
The processor invokes the program instructions stored in the memory and is configured to perform any one of the methods provided by the embodiments of the present application in accordance with the obtained program instructions.
An embodiment of the present application provides a computer storage medium for storing the computer program instructions used by the apparatuses provided by the embodiments of the present application described above, where the computer storage medium contains the program for performing any one of the methods provided by the embodiments of the present application described above.
At the LMF side, embodiments of the present application provide a satellite differential assistance data transmission apparatus, referring to FIG. 14, including:
a processor 500 configured to read the programs in a memory 520 to perform the process of:

acquiring and calculating the assistance information related to a Beidou satellite positioning system, where the assistance information includes but not limited to differential assistance data;
sending the assistance information related to the Beidou satellite positioning system to a 5G base station through broadcasting via a transceiver 510.

Optionally, the assistance information for UE location calculation further includes an Identity of Global Navigation Satellite System (GNSS ID) and an Identity of Space Based Augmentation System (SBAS ID).
Optionally, the assistance information for UE location calculation further includes an indication to confirm whether the differential assistance data is encrypted.
Optionally, the LMF entity receives the assistance information sent by the base station for assisting in determining the differential assistance data for UE location calculation; and the differential assistance data for UE location calculation is determined according to the assistance information for assisting in determining the differential assistance data for UE location calculation;
where the differential assistance data for UE location calculation refers to differential assistance data of a serving base station, or a serving cell, or a TP of a serving base station of a UE.
Optionally, the assistance information for assisting in determining the differential assistance data for UE location calculation includes:
the geographic location information of the base station, or the geographic location information of a cell under the jurisdiction of the base station, or the geographic location information of the TP of the base station.
Optionally, the processor 500 is further configured to:
acquire the assistance information sent by a space based augmentation system for calculating the differential assistance data for UE location calculation, where the assistance information contains but not limited to differential assistance data of the space based augmentation system.
Optionally, the processor 500 is further configured to:
update the differential assistance data periodically, and send the updated differential assistance data to the base station periodically via the transceiver 510.
The transceiver 510 is configured to receive and send the data under the control of the processor 500.
In a case at the base station side, the processor 500 is configured to read the programs in the memory 520 to perform the process of:

receiving the assistance information for UE location calculation via the transceiver 510, where the assistance information includes but not limited to differential assistance data;
broadcasting or updating a positioning system message according to the assistance information, wherein the positioning system message carries the differential assistance data.

Optionally, the assistance information further includes a GNSS ID and an SBAS ID.
Optionally, the assistance information further includes an indication to confirm whether the differential assistance data is encrypted.
Optionally, the processor 500 is further configured to: send the assistance information for assisting in determining the differential assistance data for UE location calculation to the LMF entity via the transceiver 510.
Optionally, the assistance information for assisting in determining the differential assistance data for UE location calculation includes:
the geographic location information of a base station, or the geographic location information of a cell under the jurisdiction of a base station, or the geographic location information of a TP of a base station.
Optionally, the processor 500 is further configured to:

receive the differential assistance data updated periodically via the transceiver 510;
send the updated differential assistance data to a UE via the transceiver 510.

The transceiver 510 is configured to receive and send the data under the control of the processor 500.
The computer storage medium may be any available media or data storage device accessible to the computer, including but not limited to magnetic memory (e.g., floppy disk, hard disk, magnetic tape, Magnetic Optical disc (MO) or the like), optical memory (e.g., CD, DVD, BD, HVD or the like), semiconductor memory (e.g., ROM, EPROM, EEPROM, nonvolatile memory (NAND FLASH), Solid State Disk (SSD)) or the like.
At the user equipment side, embodiments of the present application provide a positioning apparatus, referring to FIG. 15, including:

a processor 600 configured to read the programs in a memory 620 to perform the process of:
receiving a positioning system message via a transceiver 610, where the positioning system message includes assistance information for UE location calculation, and the assistance information includes but not limited to differential assistance data;
determining the location information of a UE according to the positioning system message.

Optionally, the assistance information further includes a GNSS ID and an SBAS ID.
Optionally, the processor 600 is further configured to:

receive the assistance information for UE location calculation updated periodically via the transceiver 610;
correct the location information of the UE according to the updated assistance information for UE location calculation.

The methods provided by the embodiments of the present application may be applied to the terminal devices, and may also be applied to the network devices.
Here, the terminal device can also referred to as the User Equipment ("UE" for short), Mobile Station ("MS" for short), Mobile Terminal ("MT" for short) or the like. Optionally, the terminal can has the ability of communicating with one or more core networks via the Radio Access Network (RAN). For example, the terminal can be a mobile telephone (or called "cellular" telephone), or a computer with the mobile property. For example, the terminal can also be a portable, pocket, handheld, computer built-in or vehicle-carried mobile device.
The network device may be a base station (e.g., access point), which means the device in the access network communicating with the wireless terminal via one or more sectors over the air interface. The base station may be used to perform the inter-conversion between the received air frame and the IP packet, and used as the router between the wireless terminal and the rest of the access network, wherein the rest of the access network may include Internet Protocol (IP) networks. The base station may further coordinate the attribute management of the air interface. For example, the base station can be the BTS in the GSM or CDMA, or can be the NodeB in the WCDMA, or can be the NodeB or eNB or e-NodeB (evolutional Node B) in the LTE, or can be the gNB in the 5G system, or the like. which is not limited in the embodiments of the present application.
The processing flows of the above methods may be implemented by a software program, which may be stored in a storage medium. When the stored software program is invoked, the above method operations are performed.
In summary, the present application discloses a satellite differential assistance data transmission method, a positioning method and apparatus, so as to ensure that the Beidou satellite positioning service with high precision can be better provided on the basis of 5G or other developable technical networks.
It should be understood by those skilled in the art that the embodiments of the present application can provide methods, systems and computer program products. Thus the present application can take the form of hardware embodiments alone, software embodiments alone, or embodiments combining the software and hardware aspects. Also the present application can take the form of computer program products implemented on one or more computer usable storage mediums (including but not limited to magnetic disk memories, optical memories and the like) containing computer usable program codes therein.
The present application is described by reference to the flow charts and/or the block diagrams of the methods, the devices (systems) and the computer program products according to the embodiments of the present application. It should be understood that each process and/or block in the flow charts and/or the block diagrams, and a combination of processes and/or blocks in the flow charts and/or the block diagrams can be implemented by the computer program instructions. These computer program instructions can be provided to a general-purpose computer, a dedicated computer, an embedded processor, or a processor of another programmable data processing device to produce a machine, so that an apparatus for implementing the functions specified in one or more processes of the flow charts and/or one or more blocks of the block diagrams is produced by the instructions executed by the computer or the processor of another programmable data processing device.
These computer program instructions can also be stored in a computer readable memory which is capable of guiding the computer or another programmable data processing device to operate in a particular way, so that the instructions stored in the computer readable memory produce a manufacture including the instruction apparatus which implements the functions specified in one or more processes of the flow charts and/or one or more blocks of the block diagrams.
These computer program instructions can also be loaded onto the computer or another programmable data processing device, so that a series of operation operations are performed on the computer or another programmable device to produce the computer-implemented processing. Thus the instructions executed on the computer or another programmable device provide operations for implementing the functions specified in one or more processes of the flow charts and/or one or more blocks of the block diagrams.
Evidently those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus the present application is also intended to encompass these modifications and variations therein as long as these modifications and variations to the present application come into the scope of the claims of the present application and their equivalents.

Claims

A satellite differential assistance data transmission method, comprising:
acquiring, by a Location Management Function, LMF, entity, assistance information related to a Beidou satellite positioning system, and calculating assistance information for UE location calculation, wherein the assistance information for UE location calculation comprises differential assistance data;

sending the assistance information for UE location calculation to a base station through broadcasting.
The method according to claim 1, wherein the assistance information for UE location calculation further comprises an Identity of Global Navigation Satellite System, GNSS ID, and an Identity of Space Based Augmentation System, SBAS ID.
The method according to claim 1, wherein the assistance information for UE location calculation further comprises an indication to confirm whether the differential assistance data is encrypted.
The method according to claim 1, wherein the method further comprises: receiving assistance information sent by the base station for assisting in determining the differential assistance data for UE location calculation;
the differential assistance data for UE location calculation is determined according to the assistance information for assisting in determining the differential assistance data for UE location calculation;
wherein the differential assistance data for UE location calculation refers to differential assistance data of a serving base station, or a serving cell, or a Transmission Point, TP, of a serving base station, of a UE.
The method according to claim 4, wherein the assistance information for assisting in determining the differential assistance data for UE location calculation comprises:
geographic location information of the base station, or geographic location information of a cell of the base station, or geographic location information of a TP of the base station.
The method according to claim 1, wherein the method further comprises: acquiring assistance information sent by a space based augmentation system for calculating the differential assistance data for UE location calculation, wherein the assistance information for calculating the differential assistance data for UE location calculation contains differential assistance data of the space based augmentation system.
The method according to claim 1, further comprising:
updating, by the LMF entity, the differential assistance data periodically, and sending the updated differential assistance data to the base station.
A satellite differential assistance data transmission method, comprising:
receiving assistance information for UE location calculation, wherein the assistance information comprises differential assistance data;

broadcasting or updating a positioning system message according to the assistance information, wherein the positioning system message carries the differential assistance data.
The method according to claim 8, wherein the assistance information further comprises an Identity of Global Navigation Satellite System, GNSS ID, and an Identity of Space Based Augmentation System, SBAS ID.
The method according to claim 8, wherein the assistance information further comprises an indication to confirm whether the differential assistance data is encrypted.
The method according to claim 8, wherein the method further comprises:
sending assistance information for assisting in determining the differential assistance data for UE location calculation to an LMF;

wherein the differential assistance data for UE location calculation refers to differential assistance data of a serving base station, or a serving cell, or a Transmission Point, TP, of a serving base station, of a UE.
The method according to claim 10, wherein the assistance information for assisting in determining the differential assistance data for UE location calculation comprises:
geographic location information of a base station, or geographic location information of a cell of a base station, or geographic location information of a TP of a base station.
The method according to claim 7, wherein the method further comprises:
receiving differential assistance data updated periodically;

sending the updated differential assistance data to a User Equipment, UE.
A positioning method, comprising:
receiving a positioning system message, wherein the positioning system message comprises assistance information for User Equipment, UE, location calculation, and the assistance information comprises differential assistance data;

determining location information of a UE according to the positioning system message.
The method according to claim 14, wherein the assistance information further comprises an Identity of Global Navigation Satellite System, GNSS ID, and an Identity of Space Based Augmentation System, SBAS ID.
The method according to claim 14, wherein the method further comprises:
receiving assistance information for UE location calculation updated periodically;

correcting the location information of the UE according to the updated assistance information for UE location calculation.
A satellite differential assistance data transmission apparatus, comprising:
a memory configured to store program instructions;

a processor configured to invoke the program instructions stored in the memory and perform the method of any one of claims 1-16 in accordance with the obtained program.
A satellite differential assistance data transmission apparatus, comprising:
a determining unit configured to acquire assistance information related to a Beidou satellite positioning system, and calculate assistance information for User Equipment, UE, location calculation, wherein the assistance information comprises differential assistance data;

a sending unit configured to send the assistance information for UE location calculation to a base station through broadcasting.
A satellite differential assistance data transmission apparatus, comprising:
a receiving unit configured to receive assistance information for User Equipment, UE, location calculation, wherein the assistance information comprises differential assistance data;

an updating unit configured to broadcast or update a positioning system message according to the assistance information, wherein the positioning system message carries the differential assistance data.
A positioning apparatus, comprising:
a receiving unit configured to receive a positioning system message, wherein the positioning system message comprises assistance information for User Equipment, UE, location calculation, and the assistance information comprises differential assistance data;

a determining unit configured to determine location information of a UE according to the positioning system message.
A computer storage medium, wherein the computer storage medium stores computer executable instructions which are configured to cause the computer to perform the method of any one of claims 1-16.